my profile | my password | search | faq & rules | forum home

» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Technicolor 3D issues (Page 1)

This topic comprises 2 pages: 1  2

Author Topic: Technicolor 3D issues Christopher Schaffner Film Handler Posts: 33 From: Elizabethtown, KY, USA Registered: Feb 2011 posted 05-06-2011 11:38 PM                     Got a good one for you guys this time.. OK, so, we have 2 Xetron XHC35s both with identical Centry MSA projectors. both can run 3D, one of them (we'll call it #4) has always had issues with switching between 3D and 2D. the other one (#5) has no problems at all switching between the two. Today we were supposed to run the 3d Thor in #4, but we couldnt get the 3D looking right. (one side is fine, the other is not). At first we thought it was the film, so we put the 3D Hoodwinked that 5 was running into 4, stayed with the proj so not the film. We switched the lenses, problem stayed on 4. We tried re-aligning the bulb...no change. I am out of ideas. Any help would be appreciated. Oh, I almost forgot to mention, These use Technicolor 3D lenses. and #4 was running Fast Five before it went back to 3D. One side looks normal, the other has dark bars on top and bottom and is slightly out of focus. which is noticeable with, and without 3D glasses on.  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 05-07-2011 12:59 AM                     (..dang, them are old consoles...circa 1983'ish - uses that old spider support for the anode of the bulb) Wonder if the reflector is warped ....  |  IP: Logged Christopher Schaffner Film Handler Posts: 33 From: Elizabethtown, KY, USA Registered: Feb 2011 posted 05-07-2011 01:18 AM                     Monte, We have ones even older than that :] We have a pair of Peerless Magnarcs with Simplex XLs on them. Wouldn't a warped reflector effect both 3D and standard? the 3D on this one was fine before we switched it back to 2D.  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 05-07-2011 03:04 AM                     (..Nothing wrong with Peerless/XL w/Magnetic setups - ran that set for years at a big single house for almost 15 years...before it closed down) Tech3D lenses have to be totall calibrated to work as they should - wonder if something just got knocked out of alignment to where you need tha tech back to tune it in again ... sorry, not familar with Tech3D setup, but just throwing ideas to help out .. But, sinc you're using Centurys, how's the trap and gate issue -are the bands wearing evenly, or you got one hanging up on the film to tweak it a bit? Is the lens carriage eccentric assembly still locked into place, or did it get tweaked a bit?  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 05-07-2011 09:15 AM                        Your Tech3D technician should have shown you how to switch back and forth, schooled you in it and then tested you thoroughly. That is why he was paid. He must have done a "hit and run." Call him back to complete the job for which he was paid. I would not expect him to charge you. Louis  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 05-07-2011 09:20 AM                     bars on the top and bottom makes me think you have the wrong apperture plate in  |  IP: Logged Christopher Schaffner Film Handler Posts: 33 From: Elizabethtown, KY, USA Registered: Feb 2011 posted 05-07-2011 02:12 PM                     Monte, I do not believe it is the actual lens that is the issue, because even if it has the lens from the other projector in it, it still has the problem. Doesn't seem like there are any problems with the trap & gates. I shall check the eccentric when I go in tonight. Louis, This theater had its two 3D auditoriums set-up long before I became a projectionist there, so I have no idea what the tech told them to do. Gordon, I thought about that too. It'll still do it even with no aperture plate in.  |  IP: Logged Jim Cassedy Phenomenal Film Handler Posts: 1661 From: San Francisco, CA Registered: Dec 2006 posted 05-07-2011 03:43 PM                     First of all, I think for future reference in finding this topic in the future, it should be renamed "TECHNICOLOR 3D Issues" I've had a similar "bar" or "shadow" problem last year. If you've got what looks like a dark bar or shadow at the top or bottom or the screen: >See if it goes away or becomes more or less pronounced when you close one eye or the other. (With glasses on!) OR: >Does it go away if you remove the auxiliary port masking, or if you pull the aperture plate out?? If so, I've found the best way to deal with this is to "start from scratch" - - First: >REMOVE THE AUXILLARY PORT MASKING< (really!) 1) Run the Techniolor test loop. Make sure you're using the 3D aperture plate. 2) Adjust the framing carefully, I've found that even though the picture appears to be framed correctly, if you "rack the framing knob" up & down a bit, you will begin to see a bit of a shadow at either the top or the bottom of the screen as U turn the knob. You can see it without the glasses, but the best way is to put the glasses on and alternately open & close each eye. It will either go away entirely or be less pronounced on one eye. You should find a point at which there is NO shadow when looking with either eye. This is the 'correct' framing position. I've marked my framing knob with a horizontal line for reference at this spot. At this point, you may have to adjust your projector pedistal elevation or screen masking to re-center the image on screen. Now, re-install your auxillary port masking. CAREFULLY- If it's not aligned right or perfectly flat against the glass it will create a shadow effect again. That should take care of your problem, assuming there are no other issues with your Technicolor lens! Good luck! > Did everyone get the new Techniclor 3D logo? Mine was enclosed with the screen-ads. The 3D effect looks great if you've got everything aligned right!  |  IP: Logged Tom Wienholt Master Film Handler Posts: 371 From: Towson, MD, USA Registered: Dec 2002 posted 05-07-2011 06:02 PM                     I got the new tech 3d logo... Also think it looks great!  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 05-07-2011 07:30 PM                     Yes, Gord is correct. The dark bars indicate an under-filed aperature plate top and bottom. Pull the plate out while the projector is on screen and see if the bars go away... Mark  |  IP: Logged Christopher Schaffner Film Handler Posts: 33 From: Elizabethtown, KY, USA Registered: Feb 2011 posted 05-08-2011 10:21 PM                     The dark bars were still there even with the ap. Plate out and all masking removed. And it was only doing it on one eyes image(if that make since). I did notice today that the trap was loose, could that cause one side to be dark? (like if you close your right eye, its bright, if you close your left eye its dark.)  |  IP: Logged Victor Liorentas Jedi Master Film Handler Posts: 800 From: london ontario canada Registered: May 2009 posted 05-08-2011 11:21 PM                     Sounds like your light is focused to high or low making one eye darker.  |  IP: Logged Christopher Schaffner Film Handler Posts: 33 From: Elizabethtown, KY, USA Registered: Feb 2011 posted 05-09-2011 03:12 AM                     SOLVED :] Okay, here is what we did. I don't know how many of you have ever ran a Xetron XHC35, but this is a relatively narrow(front to back) console, so the bulb cant quite be perfectly aligned. Well, I forgot, as well as our other techs, that the bulb in this proj was recently replaced, and aligned for a 2D! show. well for 3D with this console, you apparently have to align the bulb a special way? so we tried aligning it, while it was running the T3D focus/frame alignment loop, this way we were able to get both pictures the same brightness. Now about the bars across the top and bottom on one side.. for some reason, the actual tilt of the proj was causing these lines after that was fixed we reinstalled all the masking and ran the show. everything looked perfect! :]  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 05-09-2011 10:16 AM                     Congrats! I ran cruddy Xetron stuff with MANN Theatres in the late 70 to late 80's and I worked in a 4plex with these consoles for 8 years - they weren't too bad to play with. But just hated doing bulb changes in them due to that danged spider anode support and those very small allen set screws to lock down the support on the bulb since the spider was also the Positive connection. And you made sure that those allen set screw are down very tight, otherwise, you'll never get them loose after they'd arc in the spider on the anode pin of the bulb. Plus, them spiders love to get tweaked in the guides that are mounted around the reflector and would bust bulbs when the bulb couldn't expand. Thus, on every bulb change, I made sure that the spider can easily slide back and forth. We also had those Cinemeccanica POS amplifier in that console since the projectors were V-5's  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 05-09-2011 02:33 PM                     Still doesn't sound coprrect to me. Why would there be a 2-D and a 3-D setting for the lampenhousen? SThere shouldn't be really although there may be a flat-scope setting. I suggest getting in yet a different tech to look at it because something sounds amuck in the projector to lamphouse or bulb to lamphouse alignment. Mark  |  IP: Logged

All times are Central (GMT -6:00)

This topic comprises 2 pages: 1  2

Printer-friendly view of this topic

Hop To: Select a Forum: Category: Operations -------------------- Digital Cinema Forum Film Handlers' Forum Large Format Forum Ground Level Feature Info, Trailer Attachments & REAL Credit Offsets Category: Community -------------------- Film-Yak Film Handlers' Movie Reviews The Afterlife Bob Maar's Joke-A-Thon Category: Classified -------------------- Equipment and Supplies Wanted/For Sale Help Wanted/Seeking Employment Category: System -------------------- Software Beta Testing Forum

The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion and agrees to release the authors from any and all liability.